<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>css-notes</title>
  <style>
    div {
      width: 300px;
      height: 100px;
      background-color: #F1AAA6;
      -moz-box-shadow: 10px 10px 5px #888888; /* 老的 Firefox */
      box-shadow: 10px 10px 5px #888888;
    }
  </style>
</head>
<body>
<div></div>
</body>
</html>
